Components of the IR receiver system?

Discussion in 'General Electronics Chat' started by ssolitare, Feb 28, 2011.

  1. ssolitare

    Thread Starter Member

    Nov 29, 2010
    34
    0
    Also how does the IR talk to the CPU? I don't really get it.

    Components:
    Receiver
    Decoder
    ???:confused:???

    Thank you :)
     
  2. Papabravo

    Expert

    Feb 24, 2006
    10,136
    1,786
    The IR receiver looks for the presence or absence of a carrier frequency like say 38 kHz. for example. The transmitter starts each bit with a burst of carrier on for say 565 microseconds. For a '1' it then goes silent for another 560 microseconds for a total of 1.125 milliseconds. For a '0' the silence lasts for 1.685 milliseconds so the total is 2.25 milliseconds.

    A '1' is 1.125 milliseconds long and
    A '0' is 2.25 milliseconds long
     
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